Surpass has a 2 to 4 channel emg/ep/iom and eeg amplifier. It is internal signal recorder for up to 10 minutes. Free programmable Auditory Stimulator. Wide assortment of functional report templates. Display of up to 99 traces in cascade or split form. It has touch panel control. It provides up to 4 trigger inputs for ERP. It has internal amplifier switching option. It has 2 channel electrical stimulator.